LM4985TM/NOPB National Semiconductor, LM4985TM/NOPB Datasheet - Page 6

• Manufacturer Part Number: LM4985TM/NOPB
• Description: IC AMP AUDIO PWR .135W AB 12USMD
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4985TM/NOPB

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 135mW x 2 @ 16 Ohm
• Voltage - Supply: 2.3 V ~ 5.5 V
• Features: I²C, Shutdown, Thermal Protection, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 12-MicroSMD
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 135x2@16OhmW
• Audio Amplifier Function: Headphone
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 77dB
• Single Supply Voltage (min): 2.3V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 12
• For Use With: LM4985TMEVAL - BOARD EVALUATION LM4985TM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4985TMTR

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T
R
A
A
∆A
V
I
I
V
V
P
DD
SD
WU
IN
VMIN
VMAX
OS
SDIH
SDIL
O
Electrical Characteristics V
The following specifications apply for R
25˚C.
Electrical Characteristics V
The following specifications apply for R
25˚C.
V
Symbol
Symbol
Quiescent Power Supply Current
Shutdown Current
Logic Voltage Input High
Logic Voltage Input Low
Output Power
Wake Up Time form Shutdown
Input Resistance
Minimum Gain
Maximum Gain
Gain Accuracy per Step
Output Offset Voltage
Parameter
Parameter
L
L
= 16Ω, f = 1kHz, and C
= 16Ω, f = 1kHz, and C
DD
DD
= 5V
= 3.6V
V
Single-Channel no load OCL
Single-Channel no load C-CUPL
Dual-Channel no load OCL
Dual-Channel no load C-CUPL
V
THD+N
R
R
R
R
C
WT1 = 0, WT0 = 0
WT1 = 0, WT0 = 1
WT1 = 1, WT0 = 0
WT1 = 1, WT0 = 1
Stereo mode
Mono mode
Code = 00000
Code = 11111
18dB ≥ A
–44dB ≥ A
OCL
R
V
IN
SHUTDOWN
LOAD
LOAD
LOAD
LOAD
IN
BYPASS
LOAD
OCL
C-CUPL
OCL
C-CUPL
OCL
C-CUPL
OCL
C-CUPL
= 0V, I
= AC GND
(Notes 1, 2) (Continued)
= 16Ω OCL
= 16Ω C-CUPL
= 32Ω OCL
= 32Ω C-CUPL
= 32Ω
<
= 4.7µF (Note 11)
(Notes 1, 2)
V
6
OUT
1%, f
V
≥ –44dB
B
B
= GND
>
Conditions
= 4.7µF unless otherwise specified. Limits apply to T
= 4.7µF unless otherwise specified. Limits apply to T
Conditions
= 0A
–76dB
IN
= 1kHz
(Note 6)
(Note 6)
1030
2050
±
±
Typ
Typ
285
110
530
180
320
–76
1.8
1.0
2.1
2.3
0.1
2.0
68
70
38
41
75
20
10
18
0.5
1.0
LM4985
LM4985
(Notes 7,
(Notes 7,
Limit
Limit
2.52
1.08
3.1
1.0
20
60
34
8)
8)
4
3
mV (max)
mA (max)
mW (min)
µA (max)
dB (min)
dB (min)
(Limits)
(Limits)
A
A
V (max)
V (min)
Units
msec
Units
=
=
kΩ
dB